Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens + Filter Kit + Lens Band + Accessory Bundle Includes: Canon EF 17-40mm f/4L USM Lens + E-77 II 77mm Lens Cap + Lens Dust Cap E (Rear) + EW-83E Lens Hood + Lens Case LP1319 + Limited 1-Year Warranty + Lens Cleaning Pen + Lens Band + 77mm Filter Kit + Micro Fiber Cloth + Digital Camera Cleaning Kit EF Mount L-Series Lens - Aperture Range: f/4-22 Three Aspherical Elements, One Super UD - Ultrasonic Autofocus Motor Manual Focus Override - Water and Dust Resistant - Internal Zooming and Focusing Truly Circular Diaphragm - 77mm Front Filter Diameter - Rear Holder for Three Gel Filters